Trolley-wire-supporting device.



G. W. GRAVBNS.

TROLLEY WIRE SUPPORTING DEVICE.

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1,019,764. Patented Mar. 12, 1912.

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1111 STA'IjEIriEE 1 OFFICE.

GEORGE W. CRAVENS, OF CHICAGO, ILLINOIS,

SUPPLIES COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION NEWJERSEY.

ASSIGNOR TO THE ELECTRIC SERVICE OF TROLLEY-WIRE-SUPPORTING DEVICE.

Specification of Letters Patent.

Patented Mar. 12, 1912.

Application filed September 28, 1908. Serial No. 454,962.

I '0 all whom it may concern:

Be it known that I, Gnonen \V. CRAVEN s, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Trolley-\VireSupporting Devices,of which the following is a full, clear, concise, and exact description,reference being had to the accompanying drawing, forming a part of thisspecification.

My invention relates to suspending devices ior trolley wires or thelike, its object being to provide a suspension device which shall besimple, composed of few parts, and which shall be capable of firmlyengaging the trolley wire.

A further object of my invention is to provide a suspending device inwhich the clamp is adjustable on its support, where by the trolley wiremay be supported in proper alinement.

I have illustrated in the accompanying drawings, for the purpose ofdisclosing my invention, certain forms which the same may take.

In such drawingsFigure 1 is a trans verse section of my device; and Fi 2shows a modified manner of supporting the clamp.

In the embodiment of my invention illustrated the clamp consists of apair of jaws 1 and 2, the lower ends of which are adapted to engage thetrolley wire 3. The jaw 1, at the upper end, is provided with atransversely extending portion 1 having a central opening 11 formedtherein to permit the rod 5 to pass therethrough and receive a nut 12which supports this jaw. This jaw is also provided with a downwardlyext-ending projection 13 on its outer end, which projection bears on thenut 12 to form a fulcrum point for the jaw 1. The jaw 2 is also providedwith a transversely extending portion 6 having a central opening 7 topermit the supporting rod 5 to pass therethrough and is adapted at itsouter end to engage and rest on a shoulder 8 formed on the jaw 1. Thejaw 2 is also provided with an upwardly extending projection 9 which isadapted to be engaged by the nut 10 screwed on the rod 5.

In the modification illustrated in Fig. 2 the clamp instead of beingsupported on the rod 5 is supported on the end of an insulated bolt 141.In this form instead of .pro-

viding a nut on the support, the support is provided with a shoulder 15which bears on the projection 9, the shoulder preferably having flatsides to permit engagement of a wrench for turning the bolt.

In the operation of the structure illustrated :in Fig. 1, when the nut10 is screwed dmvnwardly on the rod 5, it engages the projection 9,moving the jaws l and 2 together, the jaw 1 being fulcrumed 0n the nut12 and the jaw 2 fulcrumed on the jaw 1.

In the operation of the modification shown in Fig. 2 the entire bolt 14is turned, thereby drawing the clamping members up on the bolt.

Having thus described my invention,

what I claim as new and desire to secure by Letters Patent, is

' 1. The combination with a support, of a pair of clamping members, oneof said members being fulcrumed on the support and the other of saidmembers being fulerumed on the first member, and means for moving saidmembers on their fnlcrums to cause the same to grip the wire.

2. The combination with a support, of a pair of clamping members, one ofsaid members being adjustably 'lulcrumed on the support, the other ofsaid members being fulcrumed on the first member, and means for movingsaid members on their fulcrums to cause the same to grip the wire.

3. The combination with a supporting member, of a pair of clamping jawseach having a transverse extension, one of said extensions arranged tofulcrum on the support and the other extension arranged to fulcrum onthe first extension, and means for moving said members on their fulcrumsto cause the jaws to grip the wire.

4.. The combination with a supporting member, of a pair 01 clamping jawshaving overlapping extensions, the end of one of said extensions beingarranged to swingingly bear upon the support and the end of the otherextension being arranged to swingingly bear upon the opposite member,and means for moving said jaws on their hearing points to cause them togrip the wire.

5. The combination with a pair of clamping jaws having overlappingtransverse extensions provided with openings, a supsaid jaws to causethem to grip the Wire.

porting rod extending through said open- In Witness whereof, I havehereunto subings, a head on the end of said rod, the end of scribed myname in the presence of tWo Witone of said extensions being swinginglysupnesses. ported on said head and the end of the other GEO. W. GRAVENS.extension being swingingly supported on WVitnesses:

the first extension, and means for moving M. R. RooHFoRD,

W. PERRY HALM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

